비의류제품

traitements de surface de fibres de carbone en milieu organique etude par elements finis de l'essai de dechaussement (surface treatments of carbon fibers in organic solution. study by finite elements of the pull-out test). technical rept

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 551
in order to carry out surface treatments on continuous carbon fibers, variations were made in various parameters affecting the grafting of nitrogenous radicals. among the variations, the temperature and the potential applied to the anode play a predominant role without involvement of parasitic reactions (particularly in the case of the potential). the concentration of nitrogen detected by x-ray spectroscopy can reach 22 atomic in the best case, versus 2 initially (courtaulds xau fibers). electrochemical and chemical-blocking experiments have shown that ethylene diamine attaches either by one of nh2 group or by both. in the second part, a paper concerning the study by finite elements of the pull-out test is presented. greszczuk's model is confirmed to a certain extent. the rupture of the interface can be equally well described in terms of the critical intensity factor of the constraints
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